【摘要】 电动助力转向系统(EPS)是一种通过电动机为驾驶员提供转向助力的装置。系统的控制器(ECU)通过控制PWM输出脉冲占空比的方式来决定电动机电枢两端的电压,从而控制助力电流的大小。本文给出了基于飞利浦P87C591单片机的EPS硬件电路框图,并详细介绍了功率驱动电路及逻辑控制电路。对所设计的硬件电路在试验台架上进行了各种试验,结果表明:设计的硬件电路在软件的配合下能够实现基本的控制功能。更多还原

【Abstract】 Electric Power Steering System (EPS) is a device that provide assisted power for the driver.The ECU of the controller out-puts PWM wave to decide the armature size of the electromotor,and then decides the assisted power.The hardware of EPS based on the P87C591 are introduced,then discuss the power drive circuit and the logic control circuit in detail.Using the designed hardware circuit on the EPS test-bed and carrying on various tests,the tests result indicate that:the designed hardware circuit can realize the base control function with the software.更多还原